我面临的问题是,当我从文件(字符串)中读取时,例如:
它显示错误“包含hexBinary的非法字符:fffffffffffffffffffffffffffffffffffff”但是当我将该语句作为基本 String = fffffffffffffffffffffffffffffffff; 时一切正常。
public static void main(String[] args) throws Exception {
System.out.println( "128-bit hex key example: ffffffffffffffffffffffffffffffff" );
try(BufferedReader br = new BufferedReader(new FileReader("E:\\TESTS\\tests.txt"))) {
StringBuilder sb = new StringBuilder();
String line = br.readLine();
while (line != null) {
sb.append(line);
sb.append(System.lineSeparator());
line = br.readLine();
}
String everything = sb.toString();
Scanner scanner = new Scanner( System.in );
System.out.println( "Enter 128-bit hex key: " );
final String keyHex = scanner.nextLine();
final String plaintextHex = "aaaaaaaaaabbbbbbbbbbccccccccccff";
SecretKey key = new SecretKeySpec(DatatypeConverter
.parseHexBinary(keyHex), "AES");
System.out.println(everything);
Cipher cipher = Cipher.getInstance("AES/ECB/NoPadding");
cipher.init(Cipher.ENCRYPT_MODE, key);
byte[] result = cipher.doFinal(DatatypeConverter
.parseHexBinary(everything));
System.out.println(DatatypeConverter.printHexBinary(result));
Cipher cipherd = Cipher.getInstance("AES/ECB/NoPadding");
cipherd.init(Cipher.DECRYPT_MODE, key);
byte[] result2 = cipherd.doFinal(result);
System.out.println(DatatypeConverter.printHexBinary(result2));
}}
答案 0 :(得分:0)
String content = new Scanner(new File("E:\\TESTS\\tests.txt")).useDelimiter("\\Z").next();
System.out.println(content);
这就是魔术,移除了空间。